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Fair Value Measurements - Summary of Changes in Fair Value of Level 1 and Level 3 Assets Included Debt and Equity Securities (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |
Beginning balance | $ 75,324 | $ 78,342 | $ 91,233 | $ 107,783 | $ 106,894 | $ 109,139
Purchases |  |  |  | 1,678 | 675 | 46
Business disposition |  |  | 5,746 |  | 693 |
Net unrealized gain (loss) |  | 1,852 | 3,371 |  | 855 | 245
Sales and settlement |  | (2,728) | (4) |  |  |
Reclassification |  |  | (18,701) |  |  |
Currency translation differences | 3,183 | (2,142) | (3,303) | (2,310) | (1,334) | (2,536)
Ending balance | 78,507 | 75,324 | 78,342 | 107,151 | 107,783 | 106,894
Level 1 | Equity Securities |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |
Beginning balance | 3 | 3 | 16,109 | 8,895 | 8,804 | 8,680
Purchases |  |  |  | 1,294 |  |
Net unrealized gain (loss) |  |  | 3,352 |  | 858 | 117
Reclassification |  |  | (18,701) |  | 19 |
Currency translation differences |  |  | (757) | (356) | (786) | 7
Ending balance | 3 | 3 | 3 | 9,833 | 8,895 | 8,804
Level 3 | Equity Securities |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |
Beginning balance | 24,296 | 25,688 | 26,847 | 29,490 | 31,229 | 31,672
Purchases |  |  |  |  |  | 46
Business disposition |  |  | (776) |  | (1,630) |
Net unrealized gain (loss) |  | 1,852 | 19 |  | (3) | 128
Sales and settlement |  | (2,709) | (4) |  |  |
Reclassification |  |  |  |  | (19) |
Currency translation differences | 491 | (535) | (398) | (291) | (87) | (617)
Ending balance | 24,787 | 24,296 | 25,688 | 29,199 | 29,490 | 31,229
Level 3 | Debt Securities |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |
Beginning balance | 51,025 | 52,651 | 48,277 | 69,398 | 66,861 | 68,787
Purchases |  |  |  | 384 | 675 |
Business disposition |  |  | 6,522 |  | 2,323 |
Sales and settlement |  | (19) |  |  |  |
Currency translation differences | 2,692 | (1,607) | (2,148) | (1,663) | (461) | (1,926)
Ending balance | $ 53,717 | $ 51,025 | $ 52,651 | $ 68,119 | $ 69,398 | $ 66,861

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